Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Sinha, Aritra"'
Autor:
Sinha, Aritra, Wietek, Alexander
Stripe order is a prominent feature in the phase diagram of the high-temperature cuprate superconductors and has been confirmed as the ground state of the two-dimensional Fermi Hubbard model in certain parameter regimes. Upon increasing the temperatu
Externí odkaz:
http://arxiv.org/abs/2411.15158
We present an open-source tensor network Python library for quantum many-body simulations. At its core is an abelian-symmetric tensor, implemented as a sparse block structure managed by logical layer on top of dense multi-dimensional array backend. T
Externí odkaz:
http://arxiv.org/abs/2405.12196
Publikováno v:
Phys. Rev. B 109, 045136 (January 2024)
The Minimally Entangled Typical Thermal States (METTS) are an ensemble of pure states, equivalent to the Gibbs thermal state, that can be efficiently represented by tensor networks. In this article, we use the Projected Entangled Pair States (PEPS) a
Externí odkaz:
http://arxiv.org/abs/2310.08533
Publikováno v:
Phys. Rev. B 106, 195105 (2022)
The Hubbard model is a longstanding problem in the theory of strongly correlated electrons and a very active one in the experiments with ultracold fermionic atoms. Motivated by current and prospective quantum simulations, we apply a two-dimensional t
Externí odkaz:
http://arxiv.org/abs/2209.00985
Publikováno v:
Phys. Rev. B 103, L220302 (2021)
Metastability is a quintessential feature of first order quantum phase transitions, which is lost either by dynamical instability or by nucleating bubbles of a true vacuum through quantum tunneling. By considering a drive across the first order quant
Externí odkaz:
http://arxiv.org/abs/2103.04762
Publikováno v:
Phys. Rev. B 102, 214203 (2020)
Driving a homogeneous system across a quantum phase transition in a quench-time $\tau_Q$ generates excitations on wavelengths longer than the Kibble-Zurek (KZ) length $\hat\xi\propto\tau_Q^{\nu/(1+z\nu)}$ within the KZ time window $\hat t\propto\tau_
Externí odkaz:
http://arxiv.org/abs/2010.05621
Autor:
Chakravarty, Sandipan Prasad, Roy, Anurag Sharma, Sinha, Aritra, Baishya, Sangipran, Roy, Prasanta
Publikováno v:
In ISA Transactions October 2023 141:440-454
Autor:
Sadhukhan, Debasis, Sinha, Aritra, Francuz, Anna, Stefaniak, Justyna, Rams, Marek M., Dziarmaga, Jacek, Zurek, Wojciech H.
Publikováno v:
Phys. Rev. B 101, 144429 (2020)
A system gradually driven through a symmetry-breaking phase transition is subject to the Kibble-Zurek mechanism (KZM). As a consequence of the critical slowing down, its state cannot follow local equilibrium, and its evolution becomes non-adiabatic n
Externí odkaz:
http://arxiv.org/abs/1912.02815
Publikováno v:
Phys. Rev. B 99, 094203 (2019)
The Aubry-Andr\'e 1D lattice model describes a particle hopping in a pseudo-random potential. Depending on its strength $\lambda$, all eigenstates are either localized ($\lambda>1$) or delocalized ($\lambda<1$). Near the transition, the localization
Externí odkaz:
http://arxiv.org/abs/1811.05496
Autor:
Skipetrov, Sergey E., Sinha, Aritra
Publikováno v:
Phys. Rev. B 97, 104202 (2018)
A short quasi-monochromatic wave packet incident on a semi-infinite disordered medium gives rise to a reflected wave. The intensity of the latter decays as a power law $1/t^{\alpha}$ in the long-time limit. Using the one-dimensional Aubry-Andr\'{e} m
Externí odkaz:
http://arxiv.org/abs/1709.06828